#Minecraft plugin development

7 messages · Page 1 of 1 (latest)

frank dagger
#

Hello ! I'm coming to you because I'm brand new to Java and I'm encountering a problem.
My goal is to create a plugin that will allow boat races! So the first challenge, which seemed simple to me, is to be able to assemble blocks with a boat ☠️
The problem is that you can't teleport a boat or a player when a player is in a boat! You have to modify the boat's velocity, and these values are quite complex 😅

So I did a few tests, which turned out to be pretty good, with a block of sponge under the track:

public final class BoatRace extends JavaPlugin implements Listener {
    private final HashMap<UUID, BukkitTask> raceTimers = new HashMap<>();

    @Override
    public void onEnable() {
        getLogger().info("BoatRace has been enabled!");

        getServer().getPluginManager().registerEvents(this, this);
    }

    @Override
    public void onDisable() {
        getLogger().info("BoatRace has been disabled!");
    }

    @EventHandler
    public void onPlayerMove(PlayerMoveEvent event) {
        Player player = event.getPlayer();
        if (player.isInsideVehicle() && player.getVehicle() instanceof Boat) {
            Boat boat = (Boat) player.getVehicle();
            Location boatLocation = boat.getLocation();

            // Vérifier le bloc deux blocs en dessous du bateau
            Block blockTwoBelow = boatLocation.getBlock().getRelative(BlockFace.DOWN, 2);
            if (blockTwoBelow.getType() == Material.SPONGE) {
                boat.setVelocity(boat.getVelocity().add(new Vector(0, 0.6, 0)));
            }
        }
    }
}

But....

forest boughBOT
#

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frank dagger
#

Wanting to test a more versatile method, I created this code:

public class BoatMoveListener implements Listener {

    @EventHandler
    public void onVehicleMove(VehicleMoveEvent event) {
        Player player = (Player) event.getVehicle().getPassenger(); // Récupère le joueur à bord du véhicule
        if (player == null || !(event.getVehicle() instanceof Boat)) {
            return;
        }

        Boat boat = (Boat) event.getVehicle();
        Location from = event.getFrom();
        Location to = event.getTo();

        // Vérifier si le bateau se déplace horizontalement (pas de montée/descente)
        if (from.getBlockY() == to.getBlockY()) {
            Block blockBelow = to.clone().add(0, -1, 0).getBlock();

            if(isIceBlock(blockBelow)){
                player.sendMessage(">> Boat: move");

                Vector boatDirection = boat.getLocation().getDirection().normalize();

                Location blockTwoAheadLocation = boat.getLocation().clone().add(boatDirection.multiply(2));

                Block blockTwoAhead = blockTwoAheadLocation.getBlock();

                boat.setGravity(false);
                if (isIceBlock(blockBelow) && blockTwoAhead.getType() != Material.AIR) {
                    // Modifier la vélocité du bateau pour le faire monter d'un bloc
                    Vector currentVelocity = boat.getVelocity();
                    Vector newVelocity = new Vector(boatDirection.getX(), 2, boatDirection.getZ()); // Maint X, Z, mais edit Y
                    player.sendMessage(">> Boat: X; Y+1; Z");
                    boat.setVelocity(newVelocity);
                }
            }
            else{
                boat.setGravity(true);
            }
        }
    }

    private boolean isIceBlock(Block block) {
        Material type = block.getType();
        return type == Material.ICE || type == Material.PACKED_ICE || type == Material.BLUE_ICE;
    }
}
#

And as you can see, we have the same boat mounting system:

Code n°1:

            if (blockTwoBelow.getType() == Material.SPONGE) {
                boat.setVelocity(boat.getVelocity().add(new Vector(0, 0.6, 0)));

Code n°2:

                    Vector currentVelocity = boat.getVelocity();
                    Vector newVelocity = new Vector(boatDirection.getX(), 2, boatDirection.getZ()); // Maint X, Z, mais edit Y
                    player.sendMessage(">> Boat: X; Y+1; Z");
                    boat.setVelocity(newVelocity);

And yet! Code n°2 doesn't move my boat to Y and I don't know why....

#

If you have any ideas or suggestions I'll take it all 🙏🏻
Thanks in advance! 😇

forest boughBOT